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// Package parser2v3 contains functions to read, load and parse
// SPDX tag-value files, version 2.3.
// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
package parser2v3
import (
"fmt"
"github.com/spdx/tools-golang/spdx/common"
"github.com/spdx/tools-golang/spdx/v2_3"
"github.com/spdx/tools-golang/tvloader/reader"
)
// ParseTagValues takes a list of (tag, value) pairs, parses it and returns
// a pointer to a parsed SPDX Document.
func ParseTagValues(tvs []reader.TagValuePair) (*v2_3.Document, error) {
parser := tvParser2_3{}
for _, tv := range tvs {
err := parser.parsePair2_3(tv.Tag, tv.Value)
if err != nil {
return nil, err
}
}
if parser.file != nil && parser.file.FileSPDXIdentifier == nullSpdxElementId2_3 {
return nil, fmt.Errorf("file with FileName %s does not have SPDX identifier", parser.file.FileName)
}
if parser.pkg != nil && parser.pkg.PackageSPDXIdentifier == nullSpdxElementId2_3 {
return nil, fmt.Errorf("package with PackageName %s does not have SPDX identifier", parser.pkg.PackageName)
}
return parser.doc, nil
}
func (parser *tvParser2_3) parsePair2_3(tag string, value string) error {
switch parser.st {
case psStart2_3:
return parser.parsePairFromStart2_3(tag, value)
case psCreationInfo2_3:
return parser.parsePairFromCreationInfo2_3(tag, value)
case psPackage2_3:
return parser.parsePairFromPackage2_3(tag, value)
case psFile2_3:
return parser.parsePairFromFile2_3(tag, value)
case psSnippet2_3:
return parser.parsePairFromSnippet2_3(tag, value)
case psOtherLicense2_3:
return parser.parsePairFromOtherLicense2_3(tag, value)
case psReview2_3:
return parser.parsePairFromReview2_3(tag, value)
default:
return fmt.Errorf("parser state %v not recognized when parsing (%s, %s)", parser.st, tag, value)
}
}
func (parser *tvParser2_3) parsePairFromStart2_3(tag string, value string) error {
// fail if not in Start parser state
if parser.st != psStart2_3 {
return fmt.Errorf("got invalid state %v in parsePairFromStart2_3", parser.st)
}
// create an SPDX Document data struct if we don't have one already
if parser.doc == nil {
parser.doc = &v2_3.Document{ExternalDocumentReferences: []v2_3.ExternalDocumentRef{}}
}
switch tag {
case "DocumentComment":
parser.doc.DocumentComment = value
case "SPDXVersion":
parser.doc.SPDXVersion = value
case "DataLicense":
parser.doc.DataLicense = value
case "SPDXID":
eID, err := extractElementID(value)
if err != nil {
return err
}
parser.doc.SPDXIdentifier = eID
case "DocumentName":
parser.doc.DocumentName = value
case "DocumentNamespace":
parser.doc.DocumentNamespace = value
case "ExternalDocumentRef":
documentRefID, uri, alg, checksum, err := extractExternalDocumentReference(value)
if err != nil {
return err
}
edr := v2_3.ExternalDocumentRef{
DocumentRefID: documentRefID,
URI: uri,
Checksum: common.Checksum{Algorithm: common.ChecksumAlgorithm(alg), Value: checksum},
}
parser.doc.ExternalDocumentReferences = append(parser.doc.ExternalDocumentReferences, edr)
default:
// move to Creation Info parser state
parser.st = psCreationInfo2_3
return parser.parsePairFromCreationInfo2_3(tag, value)
}
return nil
}
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